On Thu, 30 May 2024 17:25:06 +0300, Avri Altman wrote:
> The rtt-upiu packets precede any data-out upiu packets, thus
> synchronizing the data input to the device: this mostly applies to write
> operations, but there are other operations that requires rtt as well.
>
> There are several rules binding this rtt - data-out dialog, specifically
> There can be at most outstanding bMaxNumOfRTT such packets. This might
> have an effect on write performance (sequential write in particular), as
> each data-out upiu must wait for its rtt sibling.
>
> [...]
Applied to 6.11/scsi-queue, thanks!
[1/3] scsi: ufs: Allow RTT negotiation
https://git.kernel.org/mkp/scsi/c/9ec54934ce85
[2/3] scsi: ufs: Maximum RTT supported by the host driver
https://git.kernel.org/mkp/scsi/c/e75ff63300c5
[3/3] scsi: ufs: sysfs: Make max_number_of_rtt read-write
https://git.kernel.org/mkp/scsi/c/600edc6620a4
--
Martin K. Petersen Oracle Linux Engineering
